TY - JOUR AU - B. Brehm AU - M. Gusinow AU - John Hall BT - Physical Review Letters DA - Jan-09-1967 DO - 10.1103/PhysRevLett.19.737 PY - 1967 SP - 737 EP - 741 T2 - Physical Review Letters TI - Electron Affinity of Helium Via Laser Photodetachment of its Negative Ion VL - 19 SN - 0031-9007 ER -